SSL Certificate Checker
Enter a domain or website address and we will open a TLS connection to it, read the certificate the server presents, and report who it was issued to and by, the dates it is valid for, how many days remain and whether it covers the hostname you entered.
klyro / tools / ssl-checker
FreeNo signupOn our server
No certificate read yet.
Enter a domain above. We open a TLS connection, read the public certificate and close the connection — no page is requested.
KLYRO ProPro
Unlock advanced features, save your work and get more from this tool.
€4.99/monthor €49/year
Upgrade to ProThis tool checks public certificate information only. It is not a full security assessment. It reads the certificate a server presents on port 443 and reports the dates, names and issuer it contains. It does not test cipher suites, protocol downgrades, revocation status, HSTS or anything about the application behind the certificate.
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